| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.jackrabbit.oak.stats; |
| |
| import static org.apache.jackrabbit.oak.spi.whiteboard.WhiteboardUtils.registerMBean; |
| import static org.apache.jackrabbit.oak.spi.whiteboard.WhiteboardUtils.scheduleWithFixedDelay; |
| |
| import java.util.EnumSet; |
| import java.util.concurrent.ScheduledExecutorService; |
| |
| import org.apache.jackrabbit.api.jmx.QueryStatManagerMBean; |
| import org.apache.jackrabbit.api.stats.RepositoryStatistics.Type; |
| import org.apache.jackrabbit.oak.api.jmx.RepositoryStatsMBean; |
| import org.apache.jackrabbit.oak.spi.whiteboard.CompositeRegistration; |
| import org.apache.jackrabbit.oak.spi.whiteboard.Whiteboard; |
| import org.apache.jackrabbit.oak.spi.whiteboard.WhiteboardUtils; |
| import org.apache.jackrabbit.stats.QueryStatImpl; |
| import org.apache.jackrabbit.stats.TimeSeriesMax; |
| import org.apache.jackrabbit.stats.jmx.QueryStatManager; |
| |
| /** |
| * Manager for all repository wide statistics. |
| * @see org.apache.jackrabbit.api.stats.RepositoryStatistics |
| * @see org.apache.jackrabbit.api.stats.QueryStat |
| */ |
| public class StatisticManager { |
| private final QueryStatImpl queryStat = new QueryStatImpl(); |
| private final StatisticsProvider repoStats; |
| private final TimeSeriesMax maxQueueLength; |
| private final CompositeRegistration registration; |
| |
| /** |
| * Types for which Metrics based stats would not be collected |
| * and only default stats would be collected |
| */ |
| private static final EnumSet<Type> NOOP_METRIC_TYPES = EnumSet.of( |
| Type.SESSION_READ_COUNTER, |
| Type.SESSION_READ_DURATION, |
| Type.SESSION_WRITE_DURATION, |
| Type.QUERY_COUNT |
| ); |
| |
| /** |
| * Create a new instance of this class registering all repository wide |
| * statistics with the passed {@code whiteboard}. |
| * @param whiteboard whiteboard for registering the individual statistics with |
| */ |
| public StatisticManager(Whiteboard whiteboard, ScheduledExecutorService executor) { |
| queryStat.setEnabled(true); |
| repoStats = getStatsProvider(whiteboard, executor); |
| maxQueueLength = new TimeSeriesMax(-1); |
| registration = new CompositeRegistration( |
| registerMBean(whiteboard, QueryStatManagerMBean.class, new QueryStatManager(queryStat), |
| "QueryStat", "Oak Query Statistics"), |
| registerMBean(whiteboard, RepositoryStatsMBean.class, new RepositoryStats(repoStats.getStats(), maxQueueLength), |
| RepositoryStats.TYPE, "Oak Repository Statistics"), |
| scheduleWithFixedDelay(whiteboard, new Runnable() { |
| @Override |
| public void run() { |
| maxQueueLength.recordOneSecond(); |
| } |
| }, 1)); |
| } |
| |
| /** |
| * Logs the call of each query ran on the repository. |
| * @param language the query language |
| * @param statement the query |
| * @param millis time it took to evaluate the query in milli seconds. |
| * @see org.apache.jackrabbit.stats.QueryStatCore#logQuery(java.lang.String, java.lang.String, long) |
| */ |
| public void logQueryEvaluationTime(String language, String statement, long millis) { |
| queryStat.logQuery(language, statement, millis); |
| } |
| |
| public MeterStats getMeter(Type type){ |
| return repoStats.getMeter(type.name(), getOption(type)); |
| } |
| |
| public CounterStats getStatsCounter(Type type){ |
| return repoStats.getCounterStats(type.name(), getOption(type)); |
| } |
| |
| public TimerStats getTimer(Type type){ |
| return repoStats.getTimer(type.name(), getOption(type)); |
| } |
| |
| |
| public TimeSeriesMax maxQueLengthRecorder() { |
| return maxQueueLength; |
| } |
| |
| /** |
| * Unregister all statistics previously registered with the whiteboard passed |
| * to the constructor. |
| */ |
| public void dispose() { |
| registration.unregister(); |
| } |
| |
| private StatisticsProvider getStatsProvider(Whiteboard wb, |
| ScheduledExecutorService executor) { |
| StatisticsProvider provider = WhiteboardUtils.getService(wb, StatisticsProvider.class); |
| if (provider == null){ |
| provider = new DefaultStatisticsProvider(executor); |
| } |
| return provider; |
| } |
| |
| private static StatsOptions getOption(Type type){ |
| if (NOOP_METRIC_TYPES.contains(type)){ |
| return StatsOptions.TIME_SERIES_ONLY; |
| } |
| return StatsOptions.DEFAULT; |
| } |
| |
| } |